Senior Software Engineer, Seller Health

Since we opened our doors in 2009, the world of commerce has evolved immensely, and so has Square. After enabling anyone to take payments and never miss a sale, we saw sellers stymied by disparate, outmoded products and tools that wouldn't work together.
So we expanded into software and started building integrated, omnichannel solutions - to help sellers sell online, manage inventory, offer buy now, pay later functionality through Afterpay, book appointments, engage loyal buyers, and hire and pay staff. Across it all, we've embedded financial services tools at the point of sale, so merchants can access a business loan and manage their cash flow in one place. Afterpay furthers our goal to provide omnichannel tools that unlock meaningful value and growth, enabling sellers to capture the next generation shopper, increase order sizes, and compete at a larger scale.
Today, we are a partner to sellers of all sizes - large, enterprise-scale businesses with complex operations, sellers just starting, as well as merchants who began selling with Square and have grown larger over time. As our sellers grow, so do our solutions. There is a massive opportunity in front of us. We're building a significant, meaningful, and lasting business, and we are helping sellers worldwide do the same.
Job Description
Risk Engineering works to protect Square and our customers $25B+ in payments from fraud and payment disputes. We build systems to detect and respond to potential fraud threats, provide outstanding tools to agents for investigating fraud events, and give our customers seamless web and mobile experiences to manage and fight payment disputes. Our mission is to protect Square, protect our customers, and make a complicated and sometimes painful process understandable to all.
Seller Health is looking for a Staff Software Engineer to help us build foundational tools and solutions that enhance experiences across multiple teams. You will collaborate with teams across the company on new product and market launches to create a unified experience across different workflows. Help us solve these challenging problems with data science, machine learning, and efficient tooling!
Qualifications
You will:

• Work with teams and roles across Square to develop new solutions and improve existing seller experiences
• Develop essential tooling to create unified experiences across different workflows
• Design fault-tolerant systems so the team can be brave, move fast, and break things, without ever showing a negative impact to customers
• Advocate and model engineering best practices
• Mentor other engineers

You have:

• 8+ years of software engineering experience
• Interest in working full-stack across multiple technical domains, including backend microservices and internal tooling
• Experience building products end to end - technical design, implementation, testing, launch, and maintenance
• Metrics-oriented mindset: you want your work to be measurable and impactful
• Comfortable working with a globally distributed team of data scientists, engineers, and risk experts

Technologies we use:

• Java, Go-lang, Ruby
• DynamoDB, Redis, MySQL/Aurora, Snowflake
• gRPC, REST, GraphQL

We're working to build a more inclusive economy where our customers have equal access to opportunity, and we strive to live by these same values in building our workplace. Block is an equal opportunity employer evaluating all employees and job applicants without regard to identity or any legally protected class. We also consider qualified applicants with criminal histories for employment on our team, and always assess candidates on an individualized basis.
We believe in being fair, and are committed to an inclusive interview experience, including providing reasonable accommodations throughout the recruitment process. If you require an accommodation, let your recruiter know.
Want to learn more about what we're doing to build an inclusive workplace? Check out our Inclusion & Diversity page .
Block takes a market-based approach to pay, and pay may vary depending on your location. Canada locations are categorized into one of two zones based on a cost of labor index for that geographic area. The successful candidate's starting pay will be determined based on job-related skills, experience, qualifications, work location, and market conditions. These ranges may be modified in the future.
Zone A:
$167,500 - $251,300 CAD
Zone B:
$161,800 - $242,600 CAD
Block, Inc. (NYSE: SQ) is a global technology company with a focus on financial services. Made up of Square, Cash App, Spiral, TIDAL, and TBD, we build tools to help more people access the economy. Square helps sellers run and grow their businesses with its integrated ecosystem of commerce solutions, business software, and banking services. With Cash App, anyone can easily send, spend, or invest their money in stocks or Bitcoin. Spiral (formerly Square Crypto) builds and funds free, open-source Bitcoin projects. Artists use TIDAL to help them succeed as entrepreneurs and connect more deeply with fans. TBD is building an open developer platform to make it easier to access Bitcoin and other blockchain technologies without having to go through an institution.